A lot of you is going to ask how they compare to Sony WH-1000XM5. Sony is going to have better noise cancellation. PX7 has better sound stage, clarity. Bass is very similar with both. In general the PX7 is going to sound more neutral.
The Px7 S2 have Bluetooth 5.2 with support for SBC, AAC, aptX, aptX HD and aptX. XM5 does have LDAC. However, all bluetooth "lossless" codecs are lossy. The flacs get compressed anyways, so I wouldn’t worry too much about the codecs.